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| 1 | Validity and Reliability of Chinese Physical Activity Questionnaire for Children Aged 10-17 Years显示文摘Objective This study is aimed to report the development,the reliability and validity of the Chinese Children Physical Activity Questionnaire(CCPAQ)which was designed for the assessment of physical activity pattern in young population in China.Methods The CCPAQ was administered for two times in 119 children(mean age 13.1±2.4 years;boys 47%)to examine reliability by using intraclass correlation coefficients.Validity was determined in 106 participants by agreement with the CCPAQ measures and the objective method,the ActiGraph accelerometer.Data on physical activity patter n including time spe nt on d iff ere nt intensi ties and total physical activity,sedentary behavior as well as physical activity energy expenditure were used to assess the validity with Spearman's correlation coefficient and the Bland-Altman plots.Results The reliability coefficient of the CCPAQ ranged from 0.63-0.93(Intra-class correlation coefficient).Spearman's correlation coefficient for validity of time spent on total physical activity and sedentary behavior were all 0.32(P<0.001),and for physical activity energy expenditure was 0.58(P<0.001).Time spent on moderate-to-vigorous physical activity and light physical activity showed a relatively low correlation with the accelerometer(rho=0.20,P=0.040;rho=0.19,P=0.054).Conclusion The CCPAQ appears to be a promising and feasible method to assess physical activity pattern in Chinese children. | YANG Xi JAGO Russell ZHAI Yi YANG Zhen Yu WANG Yu Ying SI Xiang WANG Jun GAO Jian Fen CHEN Jing Ron YU Ying Jie ZHAO Wen Hua | 2019 | Biomedical and Environmental Sciences2019，32，9： | 6 |
| 2 | Social correlates of sedentary behavior in young people:The UP&DOWN study显示文摘Purpose:The aim of the present study was to analyze the associations of youths' sedentary behavior(SB) with parents' and siblings' SB and physical activity(PA),as well as the associations of youths' coparticipation with parents,siblings,and friends in PA and SB with youths' SB.Methods:The sample consisted of 1543 youths(12.02±2.51 years;788 boys) enrolled in the baseline cohort of the UP&DOWN study.SB was assessed by accelerometry and questionnaire.Participants reported the time spent by their parents and siblings watching television,playing videogames,surfing the Internet,sitting/resting,and doing PA.Further,participants reported coparticipation with parents,siblings,and friends in these activities.Linear mixed models,including school and city as random effects,were performed.Results:Parents' television time was positively associated with youths' screen-based SB.Coparticipation with friends in playing videogames(in boys) and in surfing the Internet(in girls) showed a positive association with screen-based SB and a negative association with educational-based SB.Moreover,coparticipation with siblings and friends in PA was inversely associated with accelerometer-based SB in boys and girls.Conclusion:Our results emphasize the important role of social modeling in the development of sedentary lifestyles in youths.Interventions aimed at reducing health risk behaviors in youths could be more effective if they are oriented from a social perspective that involves their families and networks of their closest friends. | Veronica Cabanas-Sanchez Laura Garcia-Cervantes Laura Esteban-Gonzalo Maria Jose Girela-Rejon Jose Castro-Pinero Oscar L.Veiga | 2020 | Journal of Sport and Health Science2020，9，2： | 2 |
| 3 | Feasibility of breaking up sitting time in mainstream and special schools with a cognitively challenging motor task显示文摘Background: Children spend 70% of the school day sitting in class. Classroom-based active breaks can benefit children's physical health, but if the breaks are cognitively demanding(i.e., combine physical exertion and mental engagement), they may also improve focus and cognitive functions. Teachers and students play a crucial role in the successful implementation of active breaks, and their perspectives are critical to the feasibility of these strategies. The aim of this study was to assess the feasibility of implementing a cognitively challenging motor task as an active break in mainstream and special primary schools.Methods: A total of 5 teachers in 2 mainstream schools and 7 teachers in 1 special school(attended by children with neurodevelopmental disorders) attended a 20-min training on how to implement a 4-min cognitively challenging active break, before conducting a feasibility trial(twice a day for 1 week). To understand individual perceptions, one-on-one semistructured interviews were conducted before and after the trial with teachers, and focus group interviews were conducted with typically developing children after the trial. Questions were based on a predefined framework for feasibility studies. All interviews were audio recorded, transcribed and analyzed in NVivo 11 using a framework approach. A total of 12 teachers(11 females; 7 between 20 and 34 years old) and 34 children(16 girls; 9.3 § 1.7 years, mean § SD) participated in the interviews.Results: In mainstream schools, teachers viewed the cognitively challenging motor task as appropriate and potentially beneficial for children's health and focus. Children reported enjoying the active breaks. Teachers in special schools viewed the task as complex and potentially frustrating for children. In both school types, children's disruptive behavior and lack of time were seen as the main potential barriers to implementation. The use of music, videos, visual cards, and support staff were noted as potential facilitators.Conclusion: The cognitively challenging motor task was a feasible way to interrupt children's sitting time and promote physical activity in mainstream schools, but required changes in special schools. Further research could investigate the effectiveness of these types of task interruptions on children's physical and cognitive health. | Emiliano Mazzoli Harriet Koorts Jo Salmon Caterina Pesce Tamara May Wei-Peng Teo Lisa Michele Barnett | 2019 | Journal of Sport and Health Science2019，8，2： | 0 |
| 4 | 运用人体运动能耗监测仪ActiGraph GT3X测定不同BMI分类中习惯久坐的成年人群站立、平躺和坐立的时间指标(英文)显示文摘背景:超重和肥胖已成为世界上很多地区严重的公共健康问题。研究表明,在日常生活中做一些小的改变,诸如中断久坐(站立一会),可能有助于缓解久坐带来的健康风险。本研究旨在用人体运动能耗监测仪Acti Graph GT3X检测有久坐习惯的成年人(根据BMI分为相同的体重状况)用于站立(用计数阈值测定)、平躺和坐立(用倾角仪功能测定)的时间。方法:受试者包括22名有久坐习惯的成年人(14名男性,8名女性);平均年龄26.5±4.1岁。所有受试者均完成国际体力活动问卷(IPAQ)的自我报告,以此测定受试之前7天坐立的时间。每天坐立7 h及以上者被选取为受试者,用Acti Graph GT3X的测斜仪功能确定不同姿势。受试者须连续7天(每天24 h)携带加速器。按照BMI将受试者分类:18.5-25 kg/m2为正常,25-30 kg/m2为超重,大于30 kg/m2则为肥胖。结果:正常组(n=10)和超重组(n=6)站立的时间(在对MVPA和磨损时间进行调整后)分别为6.7 h和7.3 h,显著多于肥胖组(n=6,5.5 h);坐立时间(分别为7.1 h和6.9 h)显著少于肥胖组(8.0 h,p<0.001)。正常组和超重组站立及坐立时间均无显著差异(p=0.051,p=0.67)。3组的平躺时间也无显著差异(p=0.55)。结论:本研究描述了有久坐习惯的体重正常、超重、肥胖成年人的站立、坐立以及平躺姿势的分配情况。研究结果为通过增加站立时间防止肥胖的策略提供了新的证据。 | Faisal A.Barwais Thomas F.Cuddihy Jerome N.Rachele Tracy L.Washington | 2013 | Journal of Sport and Health Science2013，2，4： | 0 |
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